Sorrel, a perennial herbaceous plant, belongs to the buckwheat family with two common types being Garden and French sorrel. It is recognized for its citrus or sour flavor, and its leaves add a tangy taste to salads. Sorrel is hardy, adapted to various climates and its roots are invasive, thriving even in poor soil conditions. It grows best in moist, sandy soil, and its leaves should be harvested when young for a milder flavor. It’s recommended to eat in small quantities due to the high level of oxalic acid.